Alexander Sarkisian

About Dr. Alexander Sarkisian

Dr. Alexander Sarkisian is board certified in gastroenterology focusing on hepatology and obesity disorders. He is also board-certified in internal and obesity medicine.

Originally from San Diego, California Dr. Sarkisian moved to New York City for medical training, obtaining his medical degree at Weill Cornell Medical College. He completed his residency in internal medicine and fellowship in gastroenterology and hepatology at the Tulane University School of Medicine in New Orlean s, Louisiana. During his fellowship, he obtained a board certification in Obesity Medicine.

Dr. Sarkisian has a strong interest in the management of obesity with pharmacological and endoscopic interventions.  Several of his patients have been able to improve their overall well-being and digestive health after a supervised regimen to promote healthy weight loss.

In his free time, Dr. Sarkisian enjoys time with his wife and their three children as well as fishing, gardening and swimming.


  • Board Certified Internal Medicine & Obesity Medicine
  • Fellowship Trained Gastroenterology & Hepatology

Nurse Practitioner

CNOS provider: Alexander Sarkisian

Joanna Croll

Background Information

Clinic Locations
Other Specialties
  • Residency & Fellowship: Tulane University School of Medicine, New Orleans, Louisiana
  • Medical Education: Weill Cornell Medical College
  • Undergraduate & Masters: University of California, San Diego


Patient Testimonials

Very happy with Dr. Sarkisian! Both his nurse Shari and the front desk staff are fantastic. Very bright and comfortable waiting areas!

- Dr. Sarkisian's Patient

I have been treating with Dr. Sarkisian for an extremely rare form of life-threatening bowel obstruction known as a intussusception. Not only has Dr. Sarkisian been very knowledgeable and pragmatic in his approach to the treatment plan, but he clearly cares a great deal about his patients. I would recommend him without hesitation as a GI specialist.

- Anonymous

The most efficient care facility I’ve been to and I’ve been to quite a few. Very friendly people over at the CNOS South Sioux Clinic. Really like Dr. Sarkisian!

- Dr. Sarkisian's Patient